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LXT9880 Dataheets PDF



Part Number LXT9880
Manufacturers Intel
Logo Intel
Description (LXT9880 / LXT9860) Advanced 10/100 Repeater
Datasheet LXT9880 DatasheetLXT9880 Datasheet (PDF)

LXT9860/9880 Advanced 10/100 Repeater with Integrated Management Datasheet The LXT9880 is the next-generation repeater family, integrated with eight 10/100 transceivers. The LXT9880 is compatible with previous generations of Intel repeaters from the LXT980 and LXT918 families. Eight ports directly support 100BASE-TX/10BASE-T copper media. Two additional Media Independent Interface (MII) ports (10/100 Mbps selectable) connect to Media Access Controllers (MACs) for bridge/switch applications. The.

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LXT9860/9880 Advanced 10/100 Repeater with Integrated Management Datasheet The LXT9880 is the next-generation repeater family, integrated with eight 10/100 transceivers. The LXT9880 is compatible with previous generations of Intel repeaters from the LXT980 and LXT918 families. Eight ports directly support 100BASE-TX/10BASE-T copper media. Two additional Media Independent Interface (MII) ports (10/100 Mbps selectable) connect to Media Access Controllers (MACs) for bridge/switch applications. The LXT9860 offers the same features and functionality in a six-port device. This data sheet uses the singular designation “LXT98x0” to refer to both devices. The LXT98x0 provides auto-negotiation with parallel detection for the PHY ports. The LXT98x0 provides two internal repeater state machines—one operating at 10 Mbps and one at 100 Mbps. Once configured, the LXT98x0 automatically connects each port to the appropriate repeater. The LXT98x0 also provides two Inter-Repeater Backplanes (IRBs) for expansion — one operating at 10 Mbps and one at 100 Mbps. Up to 240 twisted-pair and MII ports can logically be combined into one repeater. The LXT98x0 supports SNMP and RMON management via on-chip 32- and 64-bit counters. The counters and control functions are accessible via a high-speed Serial Management Interface (SMI). Product Features s s s s s Six or eight 10/100 ports with integrated twisted-pair PHYs including integrated filters. Two 10/100 MIIs for bridging. Independent segments for 10 Mbps and 100 Mbps operation. Cascadable Inter-Repeater Backplanes (IRBs), with option for 5V stacking compatibility. Hardware assist for RMON and the Repeater MIB. s s s s s s s High-speed Serial Management Interface (SMI). Two address-tracking registers per port. Source Address matching function. Integrated LED drivers with user-selectable modes. Available in 208-pin QFP package. Operating temperature range: 0-70°C, ambient. Available in extended temperature range: -40 to +85°C, ambient. For More Information… Refer to “Section 1.0, “Other Related Documents…” on page 11” . As of January 15, 2001, this document replaces the Level One document known as Advanced 10/100 Repeater with Integrated Management. Order Number: 248987-003 August 2001 Information in this document is provided in connection with Intel® products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel’s Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The LXT9860/9880 may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800-548-4725 or by visiting Intel’s website at http://www.intel.com. Copyright © Intel Corporation, 2001 *Third-party brands and names are the property of their respective owners. Datasheet Advanced 10/100 Repeater with Integrated Management — LXT9860/9880 Contents 1.0 2.0 3.0 Other Related Documents….......................................................................................... 11 Pin Assignments and Signal Descriptions .................................................................. 12 Functional Description .................................................................................................. 31 3.1 3.2 Introduction.......................................................................................................... 31 Port Configuration ............................................................................................... 32 3.2.1 Auto-Negotiation..................................................................................... 32 3.2.2 Forced Operation ................................................................................... 33 3.2.3 Changing Port Speed - Forced............................................................... 33 .


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